From 3372e6c917e54b3a84c04ca4274000da04a98e86 Mon Sep 17 00:00:00 2001

From: chantra <chantr4@gmail.com>

Date: Thu, 17 Feb 2022 08:54:47 -0800

Subject: [PATCH 26/30] fix integer underflow in vfyFDCb

---

 lib/rpmchecksig.c | 2 +-

 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/rpmchecksig.c b/lib/rpmchecksig.c

index 5e8794e2d..7ad4e7034 100644

--- a/lib/rpmchecksig.c

+++ b/lib/rpmchecksig.c

@@ -345,7 +345,7 @@ static int vfyFDCb(struct rpmsinfo_s *sinfo, void *cbdata)

     struct vfydatafd_s *vd = cbdata;

     char *vmsg, *msg;

     size_t n;

-    size_t remainder = BUFSIZ - vd->len;

+    size_t remainder = BUFSIZ - vd->len >= 0 ? BUFSIZ - vd->len : 0;

     vmsg = rpmsinfoMsg(sinfo);

     rasprintf(&msg, "    %s\n", vmsg);

-- 

2.35.1